小编Flo*_*joe的帖子

我已经发现了许多与我非常相似的问题,但遗憾的是没有一个解决方案对我有帮助.

我需要表日历和日之间的多对一关系.日历可以有多天.

在这里我的代码,感谢您的关注:

日历类:

@Entity
@Table(name="calendars")
@NamedQuery(name="Calendar.findAll", query="SELECT c FROM Calendar c")

public class Calendar implements Serializable {
private static final long serialVersionUID = 1L;

@Id
@Column(name="calendar_id")
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int calendarId;

private String background;

@Temporal(TemporalType.DATE)
private Date begindate;

CalendarBean:

@EJB
CalendarEJB calendarEJB;

private static final long serialVersionUID = 1L;

private String calendarName;
private int calendarID;

public String getCalendarName() {
    return calendarName;
}

public void setCalendarName(String calendarName) {
    this.calendarName = calendarName;
}

public int getCalendarID() {
    return calendarID;
}

public void …